Full Press Release Details
SAN DIEGO , Sept. 30, 2024 /PRNewswire/ -- Neurocrine Biosciences, Inc. (Nasdaq: NBIX ) today announced interim results from the ongoing open-label KINECT ® -HD2 study of INGREZZA ® (valbenazine) capsules for the long-term treatment of adults with chorea associated with Huntington's disease. Robust and sustained improvements in chorea associated with Huntington's disease were observed through Week 104 in patients, irrespective of concomitant antipsychotic therapy use. These results (Poster #1465) will be presented on September 30 during the 2024 MDS International Congress of Parkinson's Disease and Movement Disorders ® in Philadelphia.
"The data from this study reinforce the long-term clinical safety of INGREZZA observed to date, showing sustained improvement in chorea regardless of antipsychotic use during the study," said Eiry W. Roberts, M.D., Chief Medical Officer, Neurocrine Biosciences. "This is an important finding given that approximately a third of patients living with Huntington's disease chorea are prescribed antipsychotic medications for neuropsychiatric symptoms without receiving treatment for the chorea that may significantly disrupt daily life."
The effect of INGREZZA on chorea over time was assessed using mean changes from baseline in the Unified Huntington's Disease Rating Scale Total Maximal Chorea (TMC) score and response status ("much improved" or "very much improved") for Clinical Global Impression of Change and Patient Global Impression of Change.
Data from this interim analysis of KINECT-HD2 suggest robust and sustained improvements in Huntington's disease (HD) chorea with INGREZZA treatment:
Additional presentations by Neurocrine Biosciences include:
About Chorea Associated with Huntington's Disease Huntington's disease is a hereditary progressive neurodegenerative disorder in which the loss of certain neurons within the brain causes motor, cognitive and psychiatric symptoms. Symptoms generally appear between the ages of 30 and 50 years and worsen over a 10- to 25-year period. Most people with HD experience chorea, an abnormal involuntary movement disorder, characterized by irregular and unpredictable movements. Chorea can affect various body parts and interfere with motor coordination, gait, swallowing and speech. HD is estimated to affect approximately 41,000 adults in the U.S., with more than 200,000 at risk of inheriting the disease.
About KINECT ® -HD KINECT ® -HD was a Phase 3, randomized, double-blind, placebo-controlled study designed to evaluate the efficacy of valbenazine as a once-daily treatment to reduce chorea associated with Huntington's disease (HD) and evaluate the safety and tolerability of valbenazine in patients with HD. The study enrolled 128 adults 18 to 75 years of age who were diagnosed with motor-manifest HD and who had sufficient chorea symptoms to meet study protocol criteria.
KINECT-HD used the Unified Huntington's Disease Rating Scale (UHDRS ® ) Total Maximal Chorea (TMC) score as the primary efficacy endpoint. The secondary endpoints included Clinical Global Impression of Change (CGI-C) response status and Patient Global Impression of Change (PGI-C) response status for valbenazine treatment. Treatment with valbenazine resulted in a placebo-adjusted mean reduction in the TMC score of 3.2 units ( P < 0.0001), indicating a substantial improvement in chorea. Secondary endpoints of CGI-C response status and PGI-C response status were also statistically significant and supported the improvements in TMC score that were seen over the 12-week study period.
Treatment-emergent adverse events in this study were generally consistent with the known safety profile of valbenazine. The most common adverse reactions in patients with HD included somnolence and sedation, urticaria, rash and insomnia.
View the complete study results from the Phase 3 KINECT-HD study published in The Lancet Neurology online edition . For more information on the KINECT-HD study, please visit HuntingtonStudyGroup.org .
About KINECT ® -HD2 KINECT ® -HD2 is an ongoing open-label study to evaluate the long-term safety and tolerability, as well as the maintenance of effects, of INGREZZA in patients with chorea associated with Huntington's disease (HD). The maintenance period up to week 156 of treatment enrolled 154 adults 18 to 75 years of age who have been diagnosed with motor-manifest HD and who have sufficient chorea symptoms to meet study protocol criteria. Concomitant antipsychotic use is allowed in the study. For more information on the KINECT-HD2 study, please visit HuntingtonStudyGroup.org or ClinicalTrials.gov .
About INGREZZA ® (valbenazine) Capsules and INGREZZA ® SPRINKLE (valbenazine) Capsules INGREZZA is a selective vesicular monoamine transporter 2 (VMAT2) inhibitor approved by the U.S. Food and Drug Administration for the treatment of adults with tardive dyskinesia (TD) and the treatment of chorea associated with Huntington's disease (HD) that is always one capsule, once daily with no complex dose adjustments to get to an effective dose. Only INGREZZA offers a therapeutic dose from day one.
INGREZZA, developed by Neurocrine Biosciences, selectively inhibits VMAT2 with no appreciable binding affinity for VMAT1, dopaminergic (including D2), serotonergic, adrenergic, histaminergic or muscarinic receptors. While the specific way INGREZZA works to treat TD and HD chorea is not fully understood, INGREZZA is unique in that it selectively and specifically targets VMAT2 to inhibit the release of dopamine, a chemical in the brain that helps control movement. INGREZZA is believed to reduce extra dopamine signaling, which may lead to fewer uncontrollable movements.
INGREZZA can be taken as one capsule, once daily together with most stable mental health regimens such as antipsychotics or antidepressants. Only INGREZZA offers the benefit of a sprinkle formulation, INGREZZA ® SPRINKLE, for those who experience dysphagia, have difficulty swallowing or prefer not to swallow a pill. INGREZZA and INGREZZA SPRINKLE dosages approved for use are 40 mg, 60 mg and 80 mg capsules.
Important Information Approved Uses INGREZZA ® (valbenazine) capsules or INGREZZA ® SPRINKLE (valbenazine) capsules are prescription medicines used to treat adults with:
It is not known if INGREZZA or INGREZZA SPRINKLE is safe and effective in children.
IMPORTANT SAFETY INFORMATION
INGREZZA or INGREZZA SPRINKLE can cause serious side effects in people with Huntington's disease, including: depression, suicidal thoughts, or suicidal actions. Tell your healthcare provider before you start taking INGREZZA or INGREZZA SPRINKLE if you have Huntington's disease and are depressed (have untreated depression or depression that is not well controlled by medicine) or have suicidal thoughts. Pay close attention to any changes, especially sudden changes, in mood, behaviors, thoughts, or feelings. This is especially important when INGREZZA or INGREZZA SPRINKLE is started and when the dose is changed. Call your healthcare provider right away if you become depressed, have unusual changes in mood or behavior, or have thoughts of hurting yourself.
Do not take INGREZZA or INGREZZA SPRINKLE if you:
INGREZZA or INGREZZA SPRINKLE can cause serious side effects, including:
Before taking INGREZZA or INGREZZA SPRINKLE, tell your healthcare provider about all of your medical conditions including if you: have liver or heart problems, are pregnant or plan to become pregnant, or are breastfeeding or plan to breastfeed.
Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. Make sure you tell all of your healthcare providers that you are taking INGREZZA or INGREZZA SPRINKLE. Taking INGREZZA or INGREZZA SPRINKLE with certain other medicines may cause serious side effects. Especially tell your healthcare provider if you: take digoxin or take or have taken a monoamine oxidase inhibitor (MAOI) medicine. You should not take INGREZZA or INGREZZA SPRINKLE if you are taking, or have stopped taking, a MAOI within the last 14 days.
The most common side effects of INGREZZA or INGREZZA SPRINKLE in people with tardive dyskinesia are sleepiness and tiredness.
The most common side effects of INGREZZA or INGREZZA SPRINKLE in people with chorea associated with Huntington's disease include sleepiness and tiredness, raised itchy red areas on your skin (hives), rash, and trouble getting to sleep or staying asleep.
These are not all of the possible side effects of INGREZZA or INGREZZA SPRINKLE. Call your doctor for medical advice about side effects. You are encouraged to report negative side effects of prescription drugs to the FDA. Visit MedWatch at https://www.fda.gov/medwatch or call 1-800-FDA-1088 .
Dosage Forms and Strengths: INGREZZA and INGREZZA SPRINKLE are available in 40 mg, 60 mg, and 80 mg capsules.
Please see full Prescribing Information , including Boxed Warning, and Medication Guide.
About Neurocrine Biosciences, Inc. Neurocrine Biosciences is a leading neuroscience-focused, biopharmaceutical company with a simple purpose: to relieve suffering for people with great needs, but few options. We are dedicated to discovering and developing life-changing treatments for patients with under-addressed neurological, neuroendocrine and neuropsychiatric disorders. The company's diverse portfolio includes FDA-approved treatments for tardive dyskinesia, chorea associated with Huntington's disease, endometriosis* and uterine fibroids*, as well as a robust pipeline including multiple compounds in mid- to late-phase clinical development across our core therapeutic areas. For three decades, we have applied our unique insight into neuroscience and the interconnections between brain and body systems to treat complex conditions. We relentlessly pursue medicines to ease the burden of debilitating diseases and disorders, because you deserve brave science. For more information, visit neurocrine.com , and follow the company on LinkedIn , X (formerly Twitter) and Facebook . (* in collaboration with AbbVie )
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SOURCE Neurocrine Biosciences, Inc.